package com.erivan.loja.dao;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

public class ConexaoHibernateFilter implements Filter{
	private SessionFactory sessionFactory;
	
	@Override
	public void destroy() {
	}

	@Override
	public void doFilter(ServletRequest servletFilter, ServletResponse servletResponse,
			FilterChain chain) throws IOException, ServletException {
		try {
			this.sessionFactory.getCurrentSession().beginTransaction();
			chain.doFilter(servletFilter, servletResponse);
			this.sessionFactory.getCurrentSession().getTransaction().commit();
			this.sessionFactory.getCurrentSession().close();			
		} catch (Throwable e) {
			try {
				if(this.sessionFactory.getCurrentSession().getTransaction().isActive()){
					this.sessionFactory.getCurrentSession().getTransaction().rollback();					
				}
			} catch (Throwable t) {
				t.printStackTrace();
			}
			throw new ServletException();
		}
	}

	@Override
	public void init(FilterConfig conf) throws ServletException {		
		this.sessionFactory = HibernateUtil.getSession();
	}
	

}
